package com.happypets.filter;

import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

public class DogFilter implements Filter {

    public DogFilter() {
    }

	public void destroy() {
	}

	public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
		HttpServletRequest req = (HttpServletRequest)request;
		HttpServletResponse resp = (HttpServletResponse)response;
		
		HttpSession session = req.getSession();
		
		String flag = (String)session.getAttribute("dogFlag");
		String path = req.getContextPath();
		
		String id = request.getParameter("id");
		
		System.out.println("dogFilter flag = "+flag);
		
		if(flag != null){
			chain.doFilter(request, response);
		}else{
			if(id != null){
				resp.sendRedirect(path+"/DogServlet?id="+id);
			}else{
				resp.sendRedirect(path+"/web/dogs.jsp");
			}
			
		}
		
		
	}

	/**
	 * @see Filter#init(FilterConfig)
	 */
	public void init(FilterConfig fConfig) throws ServletException {
		// TODO Auto-generated method stub
	}

}
